The Lionel U.S. Army Mobile Missle Launcher No. 44 was painted BLUE on a GRAY shell with WHITE lettering and a BLUE operator sitting at the control panel. Available from 1959 until 1962, this engine came with Magnetraction, had a three position directional unit whose control lever was adjustable from the top of the body, Type IIF motor, RED light on the roof, and one solid die-cast coupler.

Early versions had a problem with the clearance for the directional unit. To solve this problem Lionel cut a hole in the bottom of the chassis right beneath the unit. Early issues of this engine do not have this hole. There are two variations:

Variation A: DARK GRAY missile launcher, and the operator has both the face and the hands painted a FLESH color.

Variation B: LIGHT GRAY missile launcher, and the operator is not painted.

Lionel issued this unit for use on O27 track, but it will also operate on the larger radius curves of O gauge track.